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Related Concept Videos

Brain Imaging01:14

Brain Imaging

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Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...
956

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High resolution whole brain diffusion imaging at 7T for the Human Connectome Project.

A T Vu1, E Auerbach1, C Lenglet1

  • 1Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN 55455, USA.

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High-resolution diffusion MRI at 7T provides unprecedented detail for the Human Connectome Project. Optimized 7T acquisitions overcome field-specific challenges, yielding in-vivo data comparable to ex-vivo studies.

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Area of Science:

  • Neuroimaging
  • Magnetic Resonance Imaging

Background:

  • Human Connectome Project (HCP) relies on high-quality diffusion MRI (dMRI) for mapping brain connectivity.
  • Ultrahigh fields (7T) offer higher signal-to-noise ratio (SNR) but present challenges like shorter relaxation times and B1 inhomogeneity.

Purpose of the Study:

  • To present optimized 7T dMRI acquisition techniques for the HCP.
  • To overcome limitations of dMRI at ultrahigh fields for in-vivo human brain imaging.

Main Methods:

  • Developed and optimized multiband (MB)-accelerated 7T dMRI protocols.
  • Conducted intensive pilot studies to address 7T specific challenges like SAR and B1 inhomogeneity.
  • Acquired whole-brain, high-resolution, in-vivo dMRI data.

Main Results:

  • Achieved high-quality, high-resolution whole-brain in-vivo dMRI data at 7T.
  • Demonstrated spatial detail comparable to ex-vivo studies.
  • Complemented existing high-quality 3T HCP data from the same subjects.

Conclusions:

  • Recent advancements enable efficient, high-quality 7T dMRI for the HCP.
  • Optimized 7T data significantly enhance in-vivo human connectome mapping.
  • These datasets will be made publicly available.